Other than the chickens invading the garden we were finding evidence that deer were hopping the garden fence so I strung electric fence tape two feet above the fence and hooked it to a charger. This was good for about two weeks but then the deer learned to jump over the six foot high tape. Raspberries, lettuce and peas were drastically pruned.
We found a solution and it was probably the best $70 we’ve spent (though you can get it for nearly half that price on-line). It is a motion detecting device that sprays a noisy jet of water all around to frighten off any deer that even comes close to the garden. We’ve had it set up for three weeks now and we have seen no sign of deer in the garden since.